Entrega segura y eficaz de ADN y ARN in vivo mediante el uso de vehículos proteolípidos
Douglas W Brown1, Ping Wee2, Prakash Bhandari2
1Department of Oncology, University of Alberta, Edmonton, AB T6G 2E1, Canada; Entos Pharmaceuticals, 10230 Jasper Avenue, Suite 4550, Edmonton, AB T5J 4P6, Canada.
Cell
|September 11, 2024
Resumen
Los nuevos vehículos proteolípidos (PLV) que utilizan proteínas de fusión viral ofrecen una plataforma prometedora de baja inmunogenicidad para medicamentos genéticos. Estos FAST-PLV permiten una entrega genética efectiva y la repetición de la dosificación para posibles aplicaciones terapéuticas.
Área de la Ciencia:
- Biotecnología
- Terapia génica
- La nanomedicina
Sus antecedentes:
- La administración actual de medicamentos genéticos se enfrenta a desafíos con tolerabilidad, escalabilidad e inmunogenicidad.
- Los sistemas de administración virales y no virales tienen limitaciones que dificultan el éxito clínico.
Objetivo del estudio:
- Desarrollar una plataforma de entrega mejorada para medicamentos genéticos que supere las limitaciones existentes.
- Crear un nuevo vehículo proteolípido (PLV) con capacidades mejoradas de entrega de genes.
Principales métodos:
- Vehículos proteolípidos desarrollados (PLV) que incorporan proteínas pequeñas de transmembrana asociadas a la fusión (FAST) de ortorreovirus.
- Se utilizó mezcla microfluídica escalable para la formulación de PLV.
- Biblioteca de proteínas FAST para identificar las variantes de actividad de fusión mejorada.
- FAST-PLV probados para la administración sistémica de ARNm y ADN en modelos de ratones y primates no humanos.
Principales resultados:
- Identificó una proteína FAST quimérica con una actividad de fusión de membrana superior, que mejora la expresión génica.
- Se ha demostrado una amplia biodistribución y un suministro sistémico efectivo de ARNm y ADN mediante FAST-PLV.
- Mostró baja inmunogenicidad y actividad sostenida tras dosis repetidas.
- Se obtuvieron aumentos significativos en la masa muscular y la fuerza a través de la terapia génica con ADN de follistatina utilizando FAST-PLVs.
Conclusiones:
- Los FAST-PLV representan una plataforma novedosa, escalable y de baja inmunogenicidad para medicamentos genéticos.
- Los FAST-PLV desarrollados muestran potencial para terapias génicas efectivas y redoseables.
- Esta plataforma promueve el desarrollo de medicamentos genéticos de próxima generación.
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